Multiaxial high cycle fatigue damage evolution model including additional hardening effect

被引：0
作者：
Peng, Yan [1 ,2 ]
Li, Haoran [1 ]
机构：
[1] National Engineering Research Center for Equipment and Technology of Cold Strip Rolling, Yanshan University, Qinhuangdao
[2] State Key Laboratory of Metastable Material Science and Technology, Yanshan University, Qinhuangdao
来源：
Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2015年 / 51卷 / 16期
关键词：
Damage mechanics; Equivalent conversion; Multiaxial high-cycle fatigue; Non-proportional loading; Parameters identification;
D O I：
10.3901/JME.2015.16.135
中图分类号：
学科分类号：
摘要：
Based on continuum damage mechanics theory and corrected cycle intensity factor method, the effect of non-proportional loading on high-cycle fatigue life is investigated. Consequently, a hardening model with multiaxial stress equivalent conversion and high cycle fatigue damage is established. Simultaneously, in the base of S-N curve equation based on the conventional micro-plastic strain high-cycle fatigue damage evolution model and the basic principles of corrected cycle intensity factor method, a material parameter identification method of model is described. Take the metal material of aluminum alloy LY12CZ and 30CrMnSiA steel commonly used in aeronautic industry as examples, model parameters of two kinds of material are obtained. Embed the established damage evolution model into the UMAT subroutine in ABAQUS, and realize the damage tracking and life prediction for specimens. The calculation results of two materials show that the predictive effect of new models are both in the error of less than 3 times, and in good agreement with experiment. In addition, compare and analyze the predictive effect of other existing prediction models, and the results indicate that the new developed model is more suitable for life prediction of multiaxial high cycle fatigue. ©, 2015, Journal of Mechanical Engineering. All right reserved.
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页码：135 / 142
页数：7
相关论文
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